The Woman Who Mapped the Ocean Floor Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Marie Tharp and Bruce Heezen's map of the ocean floor, hand-drawn by Heinrich Berann. ( Library of Congress, Geography and Map Division / Library of Congress ) Produced by Isabel Angell Hosted by Todd Zwillich Produced by PRI and WNYC